Patents by Inventor Chi Chung Kwok

Chi Chung Kwok has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240130086
    Abstract: A multimode immersion cooling system includes a first, single-phase immersion cooling mode and a second, two-phase immersion cooling mode. The system operates in a single phase mode and reserves a two-phase mode for peak energy consumption periods. A single thermal transfer fluid is used for both modes, remaining in a liquid phase in a first single-phase immersion cooling mode and vaporizing when the thermal transfer fluid temperature reaches its boiling point in a second two-phase immersion cooling mode. A heat exchanger extracts thermal energy from heated thermal transfer fluid in the single phase mode while a condenser cools vaporized thermal transfer fluid to condense the vapor during the second, two-phase immersion cooling mode. A controller determines whether the multimode immersion cooling system operates in the single-phase mode or the second two-phase mode, or both.
    Type: Application
    Filed: December 22, 2023
    Publication date: April 18, 2024
    Inventors: Wai Chung LI, Chi Ho KWOK
  • Patent number: 10998510
    Abstract: Described herein are novel platinum(II) emitters. These materials show high emission quantum efficiency, a low self-quenching constant and are stable in thermal deposition process. Organic light-emitting diodes (OLEDs) fabricated from these materials can have pure green emission, high efficiency and low efficiency roll-off.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: May 4, 2021
    Assignee: VERSITECH LIMITED
    Inventors: Chi Ming Che, Chi Fai Kui, Chi Chung Kwok
  • Patent number: 10243154
    Abstract: The current invention relates to novel platinum(II) based organometallic materials. These materials show high emission quantum efficiencies and low self-quenching constant. Also provided are high efficiency, green to orange emitting organic light-emitting diode (OLED) that are fabricated using platinum(II) based organometallic materials as the light-emitting material. The organometallic materials of the invention are soluble in common solvents; therefore, solution process methods such as spin coating and printing can be used for device fabrication. The devices fabricated from these materials show low efficiency roll-off.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: March 26, 2019
    Assignee: Versitech Limited
    Inventors: Chi Ming Che, Chi Fai Kui, Chi Chung Kwok
  • Publication number: 20180323384
    Abstract: Described herein are novel platinum(II) emitters. These materials show high emission quantum efficiency, a low self-quenching constant and are stable in thermal deposition process. Organic light-emitting diodes (OLEDs) fabricated from these materials can have pure green emission, high efficiency and low efficiency roll-off.
    Type: Application
    Filed: July 16, 2018
    Publication date: November 8, 2018
    Inventors: Chi Ming Che, Chi Fai Kui, Chi Chung Kwok
  • Publication number: 20180233680
    Abstract: The current invention relates to novel platinum(II) based organometallic materials. These materials show high emission quantum efficiencies and low self-quenching constant. Also provided are high efficiency, green to orange emitting organic light-emitting diode (OLED) that are fabricated using platinum(II) based organometallic materials as the light-emitting material. The organometallic materials of the invention are soluble in common solvents; therefore, solution process methods such as spin coating and printing can be used for device fabrication. The devices fabricated from these materials show low efficiency roll-off.
    Type: Application
    Filed: April 11, 2018
    Publication date: August 16, 2018
    Inventors: Chi Ming CHE, Chi Fai KUI, Chi Chung KWOK
  • Patent number: 10038153
    Abstract: Described herein are novel platinum(II) emitters. These materials show high emission quantum efficiency, a low self-quenching constant, and are stable in thermal deposition processes. Organic light-emitting diodes (OLEDs) fabricated from these materials can have pure green emission, high efficiency and low efficiency roll-off.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: July 31, 2018
    Assignee: VERSITECH LIMITED
    Inventors: Chi Ming Che, Chi Fai Kui, Chi Chung Kwok
  • Patent number: 10008681
    Abstract: The current invention relates to novel platinum(II) based organometallic materials. These materials show high emission quantum efficiencies and low self-quenching constant. Also provided are high efficiency, green to orange emitting organic light-emitting diode (OLED) that are fabricated using platinum(II) based organometallic materials as the light-emitting material. The organometallic materials of the invention are soluble in common solvents; therefore, solution process methods such as spin coating and printing can be used for device fabrication. The devices fabricated from these materials show low efficiency roll-off.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: June 26, 2018
    Assignee: VERSITECH LIMITED
    Inventors: Chi Ming Che, Chi Fai Kui, Chi Chung Kwok
  • Publication number: 20160181551
    Abstract: The current invention relates to novel platinum(II) based organometallic materials. These materials show high emission quantum efficiencies and low self-quenching constant. Also provided are high efficiency, green to orange emitting organic light-emitting diode (OLED) that are fabricated using platinum(II) based organometallic materials as the light-emitting material. The organometallic materials of the invention are soluble in common solvents; therefore, solution process methods such as spin coating and printing can be used for device fabrication. The devices fabricated from these materials show low efficiency roll-off.
    Type: Application
    Filed: February 26, 2016
    Publication date: June 23, 2016
    Inventors: Chi Ming CHE, Chi Fai KUI, Chi Chung KWOK
  • Patent number: 9306178
    Abstract: The current invention relates to novel platinum(II) based organometallic materials. These materials show high emission quantum efficiencies and low self-quenching constant. Also provided are high efficiency, green to orange emitting organic light-emitting diode (OLED) that are fabricated using platinum(II) based organometallic materials as the light-emitting material. The organometallic materials of the invention are soluble in common solvents; therefore, solution process methods such as spin coating and printing can be used for device fabrication. The devices fabricated from these materials show low efficiency roll-off.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: April 5, 2016
    Assignees: THE UNIVERSITY OF HONG KONG, VERSITECH LIMITED
    Inventors: Chi Ming Che, Chi Fai Kui, Chi Chung Kwok
  • Publication number: 20150287937
    Abstract: Described herein are novel platinum(II) emitters. These material show high emission quantum efficiency, low self-quenching constant and stable in thermal deposition process. The OLED fabricated from these materials can have pure green emission, high efficiency and low efficiency roll-off.
    Type: Application
    Filed: April 3, 2014
    Publication date: October 8, 2015
    Inventors: Chi Ming Che, Chi Fai Kui, Chi Chung Kwok
  • Patent number: 8877353
    Abstract: Described are novel platinum (II) containing organometallic materials. These materials show green to orange emissions with high emission quantum efficiencies. Using the materials as emitting materials; pure green emitting organic light-emitting diodes can be fabricated. Since the novel platinum (II) containing organometallic materials are soluble in common solvents, solution process methods such as spin coating and printing can be used for device fabrication.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: November 4, 2014
    Assignee: Versitech Limited
    Inventors: Chi Ming Che, Chi Fai Kui, Chi Chung Kwok
  • Publication number: 20130274473
    Abstract: The current invention relates to novel platinum(II) based organometallic materials. These materials show high emission quantum efficiencies and low self-quenching constant. Also provided are high efficiency, green to orange emitting organic light-emitting diode (OLED) that are fabricated using platinum(II) based organometallic materials as the light-emitting material. The organometallic materials of the invention are soluble in common solvents; therefore, solution process methods such as spin coating and printing can be used for device fabrication. The devices fabricated from these materials show low efficiency roll-off.
    Type: Application
    Filed: April 11, 2013
    Publication date: October 17, 2013
    Applicant: The University of Hong Kong
    Inventors: Chi Ming CHE, Chi Fai KUI, Chi Chung KWOK
  • Publication number: 20120018711
    Abstract: Described are novel platinum (II) containing organometallic materials. These materials show green to orange emissions with high emission quantum efficiencies. Using the materials as emitting materials; pure green emitting organic light-emitting diodes can be fabricated. Since the novel platinum (II) containing organometallic materials are soluble in common solvents, solution process methods such as spin coating and printing can be used for device fabrication.
    Type: Application
    Filed: July 13, 2011
    Publication date: January 26, 2012
    Applicant: THE UNIVERSITY OF HONG KONG
    Inventors: Chi Ming Che, Chi Fai Kui, Chi Chung Kwok
  • Publication number: 20100314994
    Abstract: This invention provides a class of organometallic complexes comprising a tridentate isoquinoline-pyridine-benzene based ligand, a mono-dentate ligand and a platinum (II) center which show high emission quantum efficiency and good thermal stability. This invention also discloses organometallic complexes in organic light-emitting diode (OLED) including them.
    Type: Application
    Filed: June 16, 2009
    Publication date: December 16, 2010
    Inventors: Chi Ming CHE, Chi Fai Kui, Chi Chung Kwok